root / snf-common / synnefo / lib / astakos.py @ cd5033bd
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1 | 8acb1f97 | Kostas Papadimitriou | # Copyright 2011-2012 GRNET S.A. All rights reserved.
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2 | d65af928 | Kostas Papadimitriou | #
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3 | 8acb1f97 | Kostas Papadimitriou | # Redistribution and use in source and binary forms, with or
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4 | 8acb1f97 | Kostas Papadimitriou | # without modification, are permitted provided that the following
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5 | 8acb1f97 | Kostas Papadimitriou | # conditions are met:
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6 | d65af928 | Kostas Papadimitriou | #
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7 | 8acb1f97 | Kostas Papadimitriou | # 1. Redistributions of source code must retain the above
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8 | 8acb1f97 | Kostas Papadimitriou | # copyright notice, this list of conditions and the following
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9 | 8acb1f97 | Kostas Papadimitriou | # disclaimer.
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10 | d65af928 | Kostas Papadimitriou | #
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11 | 8acb1f97 | Kostas Papadimitriou | # 2. Redistributions in binary form must reproduce the above
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12 | 8acb1f97 | Kostas Papadimitriou | # copyright notice, this list of conditions and the following
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13 | 8acb1f97 | Kostas Papadimitriou | # disclaimer in the documentation and/or other materials
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14 | 8acb1f97 | Kostas Papadimitriou | # provided with the distribution.
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15 | d65af928 | Kostas Papadimitriou | #
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16 | 8acb1f97 | Kostas Papadimitriou | # THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
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17 | 8acb1f97 | Kostas Papadimitriou | # OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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18 | 8acb1f97 | Kostas Papadimitriou | # WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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19 | 8acb1f97 | Kostas Papadimitriou | # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
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20 | 8acb1f97 | Kostas Papadimitriou | # CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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21 | 8acb1f97 | Kostas Papadimitriou | # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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22 | 8acb1f97 | Kostas Papadimitriou | # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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23 | 8acb1f97 | Kostas Papadimitriou | # USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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24 | 8acb1f97 | Kostas Papadimitriou | # AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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25 | 8acb1f97 | Kostas Papadimitriou | # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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26 | 8acb1f97 | Kostas Papadimitriou | # ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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27 | 8acb1f97 | Kostas Papadimitriou | # POSSIBILITY OF SUCH DAMAGE.
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28 | d65af928 | Kostas Papadimitriou | #
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29 | 8acb1f97 | Kostas Papadimitriou | # The views and conclusions contained in the software and
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30 | 8acb1f97 | Kostas Papadimitriou | # documentation are those of the authors and should not be
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31 | 8acb1f97 | Kostas Papadimitriou | # interpreted as representing official policies, either expressed
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32 | 8acb1f97 | Kostas Papadimitriou | # or implied, of GRNET S.A.
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33 | 8acb1f97 | Kostas Papadimitriou | |
34 | 83204389 | Kostas Papadimitriou | import logging |
35 | 83204389 | Kostas Papadimitriou | |
36 | 8acb1f97 | Kostas Papadimitriou | from time import time, mktime |
37 | c700f742 | Sofia Papagiannaki | from urlparse import urlparse, urlsplit, urlunsplit |
38 | 8acb1f97 | Kostas Papadimitriou | from urllib import quote, unquote |
39 | 8acb1f97 | Kostas Papadimitriou | |
40 | 8acb1f97 | Kostas Papadimitriou | from django.conf import settings |
41 | 8acb1f97 | Kostas Papadimitriou | from django.utils import simplejson as json |
42 | c700f742 | Sofia Papagiannaki | from django.utils.http import urlencode |
43 | 8acb1f97 | Kostas Papadimitriou | |
44 | 27cfa807 | Vangelis Koukis | from synnefo.lib.pool.http import get_http_connection |
45 | 27cfa807 | Vangelis Koukis | |
46 | 83204389 | Kostas Papadimitriou | logger = logging.getLogger(__name__) |
47 | 8acb1f97 | Kostas Papadimitriou | |
48 | c700f742 | Sofia Papagiannaki | def retry(howmany): |
49 | c700f742 | Sofia Papagiannaki | def execute(func): |
50 | c700f742 | Sofia Papagiannaki | def f(*args, **kwargs): |
51 | c700f742 | Sofia Papagiannaki | attempts = 0
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52 | cd5033bd | Sofia Papagiannaki | while True: |
53 | c700f742 | Sofia Papagiannaki | try:
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54 | c700f742 | Sofia Papagiannaki | return func(*args, **kwargs)
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55 | c700f742 | Sofia Papagiannaki | except Exception, e: |
56 | cd5033bd | Sofia Papagiannaki | is_last_attempt = attempts == howmany - 1
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57 | cd5033bd | Sofia Papagiannaki | if is_last_attempt:
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58 | cd5033bd | Sofia Papagiannaki | raise e
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59 | c700f742 | Sofia Papagiannaki | if e.args:
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60 | c700f742 | Sofia Papagiannaki | status = e.args[-1]
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61 | c700f742 | Sofia Papagiannaki | # In case of Unauthorized response or Not Found return directly
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62 | c700f742 | Sofia Papagiannaki | if status == 401 or status == 404: |
63 | c700f742 | Sofia Papagiannaki | raise e
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64 | c700f742 | Sofia Papagiannaki | attempts += 1
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65 | c700f742 | Sofia Papagiannaki | return f
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66 | c700f742 | Sofia Papagiannaki | return execute
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67 | c700f742 | Sofia Papagiannaki | |
68 | c700f742 | Sofia Papagiannaki | def call(token, url, headers={}): |
69 | c700f742 | Sofia Papagiannaki | p = urlparse(url) |
70 | d65af928 | Kostas Papadimitriou | |
71 | 8acb1f97 | Kostas Papadimitriou | kwargs = {} |
72 | c700f742 | Sofia Papagiannaki | kwargs['headers'] = headers
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73 | 8acb1f97 | Kostas Papadimitriou | kwargs['headers']['X-Auth-Token'] = token |
74 | 8acb1f97 | Kostas Papadimitriou | kwargs['headers']['Content-Length'] = 0 |
75 | d65af928 | Kostas Papadimitriou | |
76 | 27cfa807 | Vangelis Koukis | conn = get_http_connection(p.netloc, p.scheme) |
77 | 27cfa807 | Vangelis Koukis | try:
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78 | 27cfa807 | Vangelis Koukis | conn.request('GET', p.path, **kwargs)
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79 | 27cfa807 | Vangelis Koukis | response = conn.getresponse() |
80 | 27cfa807 | Vangelis Koukis | headers = response.getheaders() |
81 | 27cfa807 | Vangelis Koukis | headers = dict((unquote(h), unquote(v)) for h,v in headers) |
82 | 27cfa807 | Vangelis Koukis | length = response.getheader('content-length', None) |
83 | 27cfa807 | Vangelis Koukis | data = response.read(length) |
84 | 27cfa807 | Vangelis Koukis | status = int(response.status)
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85 | 27cfa807 | Vangelis Koukis | finally:
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86 | 27cfa807 | Vangelis Koukis | conn.close() |
87 | d65af928 | Kostas Papadimitriou | |
88 | 8acb1f97 | Kostas Papadimitriou | if status < 200 or status >= 300: |
89 | 27cfa807 | Vangelis Koukis | raise Exception(data, status) |
90 | 83204389 | Kostas Papadimitriou | |
91 | 8acb1f97 | Kostas Papadimitriou | return json.loads(data)
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92 | 8acb1f97 | Kostas Papadimitriou | |
93 | c700f742 | Sofia Papagiannaki | |
94 | c700f742 | Sofia Papagiannaki | def authenticate(token, authentication_url='http://127.0.0.1:8000/im/authenticate'): |
95 | c700f742 | Sofia Papagiannaki | return call(token, authentication_url)
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96 | c700f742 | Sofia Papagiannaki | |
97 | c700f742 | Sofia Papagiannaki | @retry(3) |
98 | c700f742 | Sofia Papagiannaki | def get_username(token, uuid, url='http://127.0.0.1:8000/im/service/api/v2.0/users'): |
99 | c700f742 | Sofia Papagiannaki | try:
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100 | c700f742 | Sofia Papagiannaki | data = call(token, url, {'X-User-Uuid': uuid})
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101 | c700f742 | Sofia Papagiannaki | except Exception, e: |
102 | c700f742 | Sofia Papagiannaki | raise e
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103 | c700f742 | Sofia Papagiannaki | else:
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104 | c700f742 | Sofia Papagiannaki | return data.get('username') |
105 | c700f742 | Sofia Papagiannaki | |
106 | c700f742 | Sofia Papagiannaki | |
107 | c700f742 | Sofia Papagiannaki | @retry(3) |
108 | c700f742 | Sofia Papagiannaki | def get_user_uuid(token, username, url='http://127.0.0.1:8000/im/service/api/v2.0/users'): |
109 | c700f742 | Sofia Papagiannaki | try:
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110 | c700f742 | Sofia Papagiannaki | data = call(token, url, {'X-User-Username': username})
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111 | c700f742 | Sofia Papagiannaki | except Exception, e: |
112 | c700f742 | Sofia Papagiannaki | raise e
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113 | c700f742 | Sofia Papagiannaki | else:
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114 | c700f742 | Sofia Papagiannaki | return data.get('uuid') |
115 | c700f742 | Sofia Papagiannaki | |
116 | c700f742 | Sofia Papagiannaki | |
117 | 8acb1f97 | Kostas Papadimitriou | def user_for_token(token, authentication_url, override_users): |
118 | 8acb1f97 | Kostas Papadimitriou | if not token: |
119 | 8acb1f97 | Kostas Papadimitriou | return None |
120 | d65af928 | Kostas Papadimitriou | |
121 | 8acb1f97 | Kostas Papadimitriou | if override_users:
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122 | 8acb1f97 | Kostas Papadimitriou | try:
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123 | 8acb1f97 | Kostas Papadimitriou | return {'uniq': override_users[token].decode('utf8')} |
124 | 8acb1f97 | Kostas Papadimitriou | except:
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125 | 8acb1f97 | Kostas Papadimitriou | return None |
126 | d65af928 | Kostas Papadimitriou | |
127 | 8acb1f97 | Kostas Papadimitriou | try:
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128 | 8acb1f97 | Kostas Papadimitriou | return authenticate(token, authentication_url)
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129 | 1055f3c6 | Sofia Papagiannaki | except Exception, e: |
130 | 1055f3c6 | Sofia Papagiannaki | # In case of Unauthorized response return None
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131 | 1055f3c6 | Sofia Papagiannaki | if e.args and e.args[-1] == 401: |
132 | 1055f3c6 | Sofia Papagiannaki | return None |
133 | 1055f3c6 | Sofia Papagiannaki | raise e
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134 | 8acb1f97 | Kostas Papadimitriou | |
135 | 6b5b443b | Antony Chazapis | def get_user(request, authentication_url='http://127.0.0.1:8000/im/authenticate', override_users={}, fallback_token=None): |
136 | 8acb1f97 | Kostas Papadimitriou | request.user = None
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137 | 8acb1f97 | Kostas Papadimitriou | request.user_uniq = None
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138 | d65af928 | Kostas Papadimitriou | |
139 | 8acb1f97 | Kostas Papadimitriou | # Try to find token in a parameter or in a request header.
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140 | 8acb1f97 | Kostas Papadimitriou | user = user_for_token(request.GET.get('X-Auth-Token'), authentication_url, override_users)
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141 | 8acb1f97 | Kostas Papadimitriou | if not user: |
142 | 8acb1f97 | Kostas Papadimitriou | user = user_for_token(request.META.get('HTTP_X_AUTH_TOKEN'), authentication_url, override_users)
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143 | 8acb1f97 | Kostas Papadimitriou | if not user: |
144 | 6b5b443b | Antony Chazapis | user = user_for_token(fallback_token, authentication_url, override_users) |
145 | 6b5b443b | Antony Chazapis | if not user: |
146 | 83204389 | Kostas Papadimitriou | logger.warning("Cannot retrieve user details from %s",
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147 | 83204389 | Kostas Papadimitriou | authentication_url) |
148 | 8acb1f97 | Kostas Papadimitriou | return
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149 | d65af928 | Kostas Papadimitriou | |
150 | 83204389 | Kostas Papadimitriou | # use user uuid, instead of email, keep email/username reference to user_id
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151 | 83204389 | Kostas Papadimitriou | request.user_uniq = user['uuid']
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152 | 8acb1f97 | Kostas Papadimitriou | request.user = user |
153 | 83204389 | Kostas Papadimitriou | request.user_id = user['username']
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154 | 83204389 | Kostas Papadimitriou | return user
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155 | d65af928 | Kostas Papadimitriou | |
156 | d65af928 | Kostas Papadimitriou | |
157 | d65af928 | Kostas Papadimitriou | def get_token_from_cookie(request, cookiename): |
158 | d65af928 | Kostas Papadimitriou | """
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159 | d65af928 | Kostas Papadimitriou | Extract token from the cookie name provided. Cookie should be in the same
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160 | d65af928 | Kostas Papadimitriou | form as astakos service sets its cookie contents::
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161 | d65af928 | Kostas Papadimitriou |
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162 | d65af928 | Kostas Papadimitriou | <user_uniq>|<user_token>
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163 | d65af928 | Kostas Papadimitriou | """
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164 | d65af928 | Kostas Papadimitriou | try:
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165 | d65af928 | Kostas Papadimitriou | cookie_content = unquote(request.COOKIES.get(cookiename, None))
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166 | d65af928 | Kostas Papadimitriou | return cookie_content.split("|")[1] |
167 | d65af928 | Kostas Papadimitriou | except AttributeError: |
168 | d65af928 | Kostas Papadimitriou | pass
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169 | d65af928 | Kostas Papadimitriou | |
170 | d65af928 | Kostas Papadimitriou | return None |